public async Task <IActionResult> Add(Cat cat)
{
if (!ModelState.IsValid)
{
return(View(cat));
}
try
{
dbContext.Cats.Add(cat);
await dbContext.SaveChangesAsync();
}
catch (DbUpdateException exception)
{
var innerException = exception.InnerException;
if (innerException is SqlException && ((SqlException)innerException).Number == 2601)
{
var model = new ErrorViewModel()
{
Message = $"Cat '{cat.Name}', {cat.Age}-years-old {cat.Breed} has already been added!"
};
return(View("Error", model));
}
}
return(Redirect("/"));
}
